Classifying – separating – and assorting solids – Sifting – Plane sifters
Patent
1995-05-22
1997-01-21
Bollinger, David H.
Classifying, separating, and assorting solids
Sifting
Plane sifters
209326, 209331, 2093654, 209364, 209405, 209411, 209412, B07B 134
Patent
active
055953069
ABSTRACT:
A screening system having a resiliently mounted housing with a screen extending thereacross. The housing is vibrated by a low frequency vibratory drive using eccentric weights. About the peripheral frame of the screen, a high frequency drive or drives is employed to vibrate the screen in the range of 20,000 Hz. The high frequency vibration is generated at the peripheral frame about the screen. The screen may be responsive to the high frequency vibrations in a plate-like manner or as a membrane. With the high frequency drives mounted within the housing, a structure made of a sheet extends from a mounting flange inwardly to a mounting ring supporting the screen and the high frequency drives and inwardly to a collecting system including a trough and a central dome. The center of the dome may be fixed to the screen and include a high frequency drive.
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Brochure of Sodeva, Published Mar. 1993 (2 pgs.)
Carr Brian S.
Hukki Ari M.
Bollinger David H.
Emerson Electric Co.
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